High Water: Flooding in Philadelphia
Drainage and Sewerage Report, 1853
Dealing with the city’s wastes in the mid-19th century
The Water and Drainage History of Philadelphia: A seven-part course
Imagine a Day Without Water
Watersheds: Learning to care for and protect our local water resources
Half a Century of Clean Water
Map of Philadelphia showing Population in year 1920
Philadelphia the Manufacturing and Industrial Capital map, 1906
1779 Revolutionary War-era map of Philadelphia and environs